Question

What is 15w+9-8w+7? And number 4? :)

Answer 1

3.) 7w+16

Take our equation

15w+9-8w+7

Combine like terms

7w+16

4.) -15m-5n+12

Take our equation

-m-5n-14m+12

Combine like terms

-15m-5n+12

Answer 2

15w+9-8w+7
=7w+16

number four
-m-5n-14m+12
=-15m-5n+12